Toyota Tundra (2015 year). Manual — part 2372

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ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: ECU Pow...

Last Modified: 9-16-2014

6.6 J

Doc ID: RM000002X1F00BX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Diagnosis Circuit; 2015 MY Tundra [08/2014 -

]

Diagnosis Circuit

DESCRIPTION

This circuit is used to read the DTCs that are output from the transponder key ECU with the Techstream.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - DLC3)

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Diagnosi...

OK

(a) Disconnect the J26 ECU connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

J26-9 (D) - J17-7 (SIL)

Always

Below 1 Ω

J26-9 (D) or J17-7 (SIL) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.

CHECK HARNESS AND CONNECTOR (DLC3 - BATTERY AND BODY GROUND)

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Diagnosi...

(a) Measure the resistance and voltage according to the

value(s) in the table below.

Standard resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

J17-4 (CG) - Body ground

Always

Below 1 Ω

J17-5 (SG) - Body ground

Standard voltage:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

J17-16 (BAT) - Body ground

Always

11 to 14 V

J17-7 (SIL) - J17-5 (SG)

Always

Pulse generation

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN

IN PROBLEM SYMPTOMS TABLE

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Diagnosi...